Preparation and fluorescent sensing applications of novel CdSe–chitosan hybrid films
Preparation and fluorescent sensing applications of novel CdSe–chitosan hybrid films
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DOI：
10.1016/j.apsusc.2010.05.063
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发表时间：
2010-09
影响因子：
6.7
通讯作者：
Huiyun Xia;G. He;Junxia Peng;Weiwei Li;Yu Fang
中科院分区：
文献类型：
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作者：
Huiyun Xia;G. He;Junxia Peng;Weiwei Li;Yu Fang
在室温下，将含Cd（Ac）2的壳聚糖膜浸入NaHSe水溶液中，在氮气保护下制备了一种新型的CdSe-壳聚糖杂化荧光膜。已经证明，利用壳聚糖膜作为基底，抑制了所形成的CdSe微纳米颗粒的聚集，并且增强了无机-有机杂化膜的传感性能。它也已被揭示，嵌入在混合膜中的CdSe的量可以通过改变Cd（Ac）2的初始浓度来改变。重要的是，混合膜的光致发光发射对聚胺的存在选择性敏感。此外，该反应是可逆的。因此，预期该膜可被开发成多胺传感器。
A novel CdSe–chitosan hybrid fluorescent film has been fabricated by dipping a chitosan film containing Cd(Ac)2into NaHSe aqueous solution under a nitrogen atmosphere at room temperature. It has been demonstrated that utilization of a chitosan film as a substrate prohibits the aggregation of the as formed CdSe micro-nano-particles, and enhances the sensing performance of the inorganic–organic hybrid film. It has been also revealed that the amount of CdSe embedded in the hybrid film can be altered by varying the initial concentration of Cd(Ac)2. Importantly, the photoluminescence emission of the hybrid film is selectively sensitive to the presence of polyamines. Furthermore, the response is reversible. Accordingly, it is anticipated that the film may be developed into a polyamine sensor.